Improvement in rivet-pockets for oil-well pumps



UNITED STATES PATENT OFFICE.

WILLIAM H. BIRGE, OF FRANKLIN, PENNSYLVANIA.

IMPROVEMENT IN RlVET-POCKETS FOR OIL-WELL PUMPS.

Specification forming part of Letters Patent No. 134,970, dated January 21, 1873.

. The sucker-rods are connected together with iron joint-s, which are riveted to the wooden rods with five or six rivets. These rods often part at the joints, and the broken rivets fall to the lower part of the Working-barrel and on the top of the standing or lower valve, and when this valve is drawn out for repair the broken rivets are in the Way.

In order to describe my invention more fully, I refer to the accompanying drawing forming a part of this specification.

Figure I is a side View of an oil-well pump embodying my invention. Fig. II is a vertical-cut sectional view of the same.

A is the working-barrel. B is a standing valve-barrel. c is the valve-seat. G is the ball-valve. d is the cage for the ball-valve, preventing it from dropping oi the seat. E is a tube that holds the standing valve upright, and forms a pocket, F, between this and the outer casing of the working-barrel A.

Any rivet becoming loose or breaking, fallin g down the interior of the workiug-barrel A, strikes the cage d and drops down into the pocket F, where it in no way 'will become an obstacle or hinderance to the proper working of the pump.

Having thus described my invention, I desire to claim The pocket F formed between the barrels A and tube E, in combination with the barrel B, valve 0, seat 0, and cage 11, substantially as and for the purpose hereinbefore set forth.

\Vitnesses: WILLIAM H. BIRGE.

THOS. ELLIS, S. S. AVERY. 

